<template>
  <div>
    <div class="search">
      <input  v-model="keyword" class="search-input" type="text" placeholder="输入城市名或者拼音">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li v-for="item of list"  class="search-item" :key="item.id" @click="handleCityClick(item.name)">
          {{item.name}}
        </li>
        <li  class="search-item" v-show="hasNoData">
          未找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import { mapMutations } from 'vuex'
export default {
  name: 'Search',
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  props: {
    cities: Object
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  }
}
</script>

<style scoped lang="stylus">
  .search
    height  .72rem
    padding: 0 .1rem
    background: #00bcd4
   .search-input
     box-sizing border-box
     padding  0 .1rem
     height .62rem
     line-height  .62rem
     width: 100%
     text-align center
     border-radius .06rem
     color #666
  .search-content
     z-index 1
     overflow hidden
     position absolute
     top 1.58rem
     left: 0
     right:0
     buttom 0
     background #eee
     .search-item
       padding:.2rem
       color #666
       border-bottom 1px solid #ccc
</style>
